The magnetic field lines of a bar magnet can be viewed by using compasses or by shaking iron filings onto a platform above the magnet. Place the magnet on top of the paper in view of the document ...

A magnetic field is invisible, but it can be detected using a magnetic compass. A compass contains a small bar magnet ... needle direction each time join the points to show the field lines The ...

A magnetic field is invisible, but it can be detected using a magnetic compass. A compass contains a small bar magnet ... needle direction each time join the points to show the field lines The ...